Question: When was Dmitry Medvedev the First Deputy Chairman of the Government of the Russian Federation?
Paraphrase: When did Dmitry Medvedev serve as the First Deputy Chairman of the Government of the Russian Federation?
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q23530 p:P39 ?s . ?s ps:P39 wd:Q1965788 . ?s pq:P580 ?value}